package cn.tedu._03vehicle.base.filter;

import cn.tedu._03vehicle.pojo.vo.UserVO;
import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;


@Slf4j
@WebFilter(filterName = "loginCheckFilter",urlPatterns ={"/v1/vehicle/*"})
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.debug("过滤器初始化");

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        log.debug("进入登录状态校验的过滤器");
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();
        UserVO userVO = (UserVO) session.getAttribute("user");
        if(userVO!=null){//已登录
            //如果有此行代码，则放行
            //如果没有则不放行
            filterChain.doFilter(request,response);
        }else{//未登录
            response.sendRedirect("/login.html");
        }
    }


    @Override
    public void destroy() {
        log.debug("过滤器销毁");

    }


}
